Marker



FIG. 1 is a perspective view of a marker showing my new design;

FIG. 2 is a front view of the marker of FIG. 1;

FIG. 3 is a side view of the marker of FIG. 1; the opposite side view being a mirror image thereof;

FIG. 4 is a rear view of the marker of FIG. 1;

FIG. 5 is a top view of the marker of FIG. 1; and,

FIG. 6 is a bottom view of the marker of FIG. 1.

The dashed lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a “marker,” as shown and described. 